OK, so I've been reading your comments here and over at DW, and I'm still trying to sort my thoughts on what you've described of your AU. The best I can come up with is that I hadn't thought about how everyone speaks the same (or pretty much the same) language in the show and how this could've been different in the past, but now that I have it makes total sense, especially considering the different cultures that exist in the Earth Kingdom. Though I'm still wondering how anyone could understand Aang, given that he wasn't part of the linguistic unification that apparently happened in the hundred years he was gone, not to mention the rest of his people were wiped out. Sorry I can't engage your ideas any deeper. :<

And now after reading your thoughts, it's inspired a tea-shop owner!Zuko AU idea that's been kicking around for a while. And that Mai/Ozai fic you linked over at DW certainly helped (it was lovely, thanks for sharing!). :D